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3 years ago

F(x) = 2/3 x -5 what is the value f(6)?

Mathematics

1 answer:

katovenus [111]3 years ago

5 0

F(6)=2/3(6)-5
f(6)=4-5
f(6)=-1

Final answer: f(6)= -1

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A school cafeteria makes cheese sauce for macaroni using 15 cups of swiss cheese 17 cups of cheddar cheese. Perry tries to make

vladimir2022 [97]

Cafeteria ratio of Swiss cheese to cheddar cheese is 15:17.

Perry’s ratio of Swiss chess to cheddar cheese is 5:7.

Wrong ratio because 5 * 3 = 15 but 7 * 3 does not equal 17.

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3 years ago

Read 2 more answers

The population of California is 3.7 x 107 people. The population of Colorado is 5.0 x 106 people. What is the difference in size

zalisa [80]

Answer:

Step-by-step explanation:

3.7 × 107 = 395.9

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530 - 395.9 = 134.10

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3 years ago

I one question please answer WILL GIVE YOUR BRAINLIEST

ohaa [14]

Answer:

Perimeter ratio: 11:6

Area ratio: 121:36

Step-by-step explanation:

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3 years ago

You are planning a survey of starting salaries for recent computer science majors. In a recent survey by the National Associatio

nydimaria [60]

Answer:

A sample size of 554 is needed.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1 - 0.95}{2} = 0.025$

Now, we have to find z in the Ztable as such z has a pvalue of $1 - \alpha$ .

That is z with a pvalue of $1 - 0.025 = 0.975$ , so Z = 1.96.

Now, find the margin of error M as such

$M = z\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

Standard deviation is known to be $12,000

This means that $\sigma = 12000$

What sample size do you need to have a margin of error equal to $1000, with 95% confidence?

This is n for which M = 1000. So

$M = z\frac{\sigma}{\sqrt{n}}$

$1000 = 1.96\frac{12000}{\sqrt{n}}$

$1000\sqrt{n} = 1.96*12$

Dividing both sides by 1000:

$\sqrt{n} = 1.96*12$

$(\sqrt{n})^2 = (1.96*12)^2$

$n = 553.2$

Rounding up:

A sample size of 554 is needed.

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3 years ago

Rolf spent 15 hours last week practicing his saxophone. If 3/10 of the time was spent practicing warm-up routines, how much time

rusak2 [61]

Answer:

(3/10)*15= 9/2= 4.5 hours practicing warm up routines

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3 years ago